Transmitter for a summoning system



FIG. 1 is a top and front perspective view of a transmitter for a summoning system showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a botom plan view thereof. 

The ornamental design for a transmitter for a summoning system, as shown and described. 